Publications

JOURNALS

Journals

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Journals

2020

  • Yi-Ju Roh, "A 40nm CMOS 12b 120MS/s Nonbinary SAR-assisted SAR ADC with Double Clock-Rate Coarse Decision," IEEE TCAS-II, 2020. (accepted)

2019

2018

2017

2016

2015

2014

  • H. S. Kim, J. H. Yang, S. H. Park, S. T. Ryu, and G. H. Cho, “A 10-Bit Column-Driver IC With Parasitic-Insensitive Iterative Charge-Sharing Based Capacitor-String Interpolation for Mobile Active-Matrix LCDs,” IEEE JSSC, 2014.
  • Ghil-Geun Oh, C. K. Lee, and S. T. Ryu, “A 10-Bit 40-MS/s Pipelined ADC With a Wide Range Operating Temperature for WAVE Applications,” IEEE TCAS-II, 2014.

2013

  • Chang-kyo Lee, W. Kim, H. Kang, and S. T. Ryu, “A Replica-Driving Technique for High Performance SC Circuits and Pipelined ADC Design,” IEEE TCAS-I, 2013.
  • Seung-Yeob Baek, J. K. Lee, and S. T. Ryu, “An 88-dB Max-SFDR 12-bit SAR ADC With Speed-Enhanced ADEC and Dual Registers,” IEEE TCAS-II, 2013.
  • Jun-Hyeok Yang, Seung-Chul Jung, Young-Suk Son, Seung-Tak Ryu, and Gyu-Hyeong Cho, “A Noise-Immune High-Speed Readout Circuit for In-Cell Touch Screen Panels,” IEEE TCAS-I, 2013.
  • Jong-In Kim, B. Sung, W. Kim, and S. T. Ryu, “A 6-b 4.1-GS/s Flash ADC With Time-Domain Latch Interpolation in 90-nm CMOS,” IEEE JSSC, 2013.
  • H. S. Kim, S. W. Han, J. H. Yang, S. Kim, Y. Kim, D. K. Yoon, J. S. Lee, J. C. Park, Y. Sung, S. D. Lee, S. T. Ryu, and G. H. Cho, "An Asynchronous Sampling-Based 128 x 128 Direct Photon-Counting X-Ray Image Detector with Multi-Energy Discrimination and High Spatial Resolution," IEEE JSSC, 2013.

2012

  • J. P. Im, S. W. Wang, S. T. Ryu, and G. H. Cho, "A 40 mV Transformer-Reuse Self-Startup Boost Converter With MPPT Control for Thermoelectric Energy Harvesting," IEEE JSSC, 2012.
  • So-Young Kang, Seung-Tak Ryu, and Chul-Soon Park, “A Precise Decibel-Linear Programmable Gain Amplifier Using a Constant Current-Density Function,” IEEE Transactions on Microwave Theory and Techniques, 2012.
  • Kiuk Gwak, Sang-Gug Lee, and Seung-Tak Ryu, “Improved Charge Pump with Reduced Reverse Current,” Journal of Semiconductor Technology and Science, 2012.
  • Si-Nai Kim, Wan Kim, Chang-Kyo Lee, and Seung-Tak Ryu, “A 6-bit 3.3-GS/s Current-Steering DAC with Stacked Unit Cell Structure,” Journal of Semiconductor Technology and Science, 2012.
  • Hun-Do Shin and Seung-Tak Ryu, “A 180-uW, 120-MHz, 4th-order Low-Pass Bessel Filter Based on FVF Biquad,” IEICE Transactions on Electronics, 2012.
  • Hun-Do Shin and Seung-Tak Ryu, “Bandwidth-Power Optimization Methodology for SFB filter Design,” Journal of Semiconductor Technology and Science, 2012.
  • Huy-Binh Le, Sang-Gug Lee and Seung-Tak Ryu, “A Single-supply 84dB DR Audio-band ADC for Compact Digital Microphones,” IEICE Transactions on Electronics, 2012.
  • Sang-Hyun Cho, Chang-Kyo Lee, Sang-Gug Lee, and Seung-Tak Ryu, “A Two-Channel Asynchronous SAR ADC With Metastable-Then-Set Algorithm,” IEEE TVLSI, 2012.

2011

  • Hyun-Sik Kim, Jin-Yong Jeon, Sung-Woo Lee, Jun-Hyeok Yang, Seung-Tak Ryu and Gyu-Hyeong Cho, “A Compact-Sized 9 Bit Switched-Current DAC for AMOLED Mobile Display Drivers,” IEEE TCAS-II, 2011.
  • Ji-Wook Kwon and Seung-Tak Ryu, “An Inherently dB-Linear All-CMOS Variable Gain Amplifier,” Journal of Semiconductor Technology and Science, 2011.
  • Huy-Binh Le, Xuan-Dien Do, Sang-Gug Lee and Seung-Tak Ryu, “A long Reset-time Power-on Reset Circuit with Brown-out Detection Capability,” IEEE TCAS-II, 2011.
  • Sang-Hyun Cho, Chang-Kyo Lee, Jong-Kee Kwon, and Seung-Tak Ryu, “A 550-μW 10-b 40-MS/s SAR ADC With Multistep Addition-Only Digital Error Correction,” IEEE JSSC, 2011.

2010

  • Yeong-Shin Jang, Hoai-Nam Nguyen, Seung-Tak Ryu and Sang-Gug Lee, “Yield-Ensuring DAC-embedded Opamp design based on accurate behavioral model development,” IEICE Transactions on Electronics, 2010.
  • S.H.Cho, H.D. Lee, K.D. Kim, S.T. Ryu and J.K. Kwon, “Dual-mode VCO gain topology for reducing in-band noise and reference spur of PLL in 65nm CMOS,” IET Electronics Letters, 2010.

2009

  • S.-H. Cho, C.-K. Lee, B.-R.-S. Sung and S.-T. Ryu, “Digital Error Correction Technique for Binary Decision Successive Approximation ADCs,” IET Electronics Letters, 2009.
  • Huy-Binh Le, Seung-Tak Ryu and Sang-Gug Lee, “A Fully On-Chip Gm-Opamp-RC Based Preamplifier for Electret Condenser Microphones,” IEICE Transactions on Electronics, 2009.
  • H. B. Le, J. W. Nam, S. T. Ryu and S. G. Lee, “Single-Chip A/D Converter for Digital Microphones with On-Chip Preamplifier and Time-Domain Noise Isolation,” IET Electronics Letters, 2009.

2007

  • Seung-Tak Ryu, Bang-Sup Song, and Kanti Bacrania, “A 10-bit 50-MS/s Pipelined ADC With Opamp Current Reuse,” IEEE JSSC, 2007.

2004

  • Seung-Tak Ryu, Sourja Ray, Bang-Sup Song, Gyu-Hyeong Cho, and Kanti Bacrania, “A 14 b-linear capacitor self-trimming pipelined ADC,” IEEE JSCC, 2004.